Hello,
I’m attaching two quick images taken on the same night (two different objects, saved as JPGs for size) - one HA, one CLSCCD filter (OSC camera). Flats taken with a panel that same night. If you look in the CLSCCD image, about a third of the way down the diagonal line that connects the top left and bottom right corners, you’ll see a dust bunny. That’s not there in the HA image.
Has anyone experienced s/t like this, or know what may be going on?
The only thing I can think of is that it is something on the CLSCCD filter (although that has been closed in a filter wheel for months). If it was on the objective or the sensor, it would show up on both. (I actually took images on two nights, cleaning the objective after their first night, and taking flats again on the second night and the same thing happens).
So it can only be on the CLSCCD filter right? I haven’t opened it up yet, but before I did that I thought I’d check to see if anyone else has ever experienced s/t like this? (SHouldn’t the flat calibration still remove it even if its just s/t on the CLSCCD filter? The FW and objective haven’t been opened for months, and this has never happened before).
Many thanks for any insights!
Vin
CLSCCD:📷 lbn_538_for Abin post.jpg
HA:
📷 LDN_909_for Abin post.jpg
